Utilizing exhaust-steam



(No Model.)

' D. RENSHAW.

UTILIZING EXHAUST STEAM. No. 274,975. Patented Apr. 3,1883.

N PETERS. Phalv-ljmognphlr. Wuhlnglon. D. C.

UNITED STATES PATENT OFFICE.

DAVID RENSHAW, OF BRA INTREE, MASSACHUSETTS.

uriuzme EXHAUST-STEAM.

SPECIFICATION forming part of Letters Patent No. 274,975, dated April 3, 1883.

Application filed January 6,1 883. (No model.)

.To all whom it may concern Be it known that 1, DAVID RENSHAW, of Braiutree, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Process of Utilizing Exhaust-Steam; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, and to the letters ofreference marked thereon,which form partof this specification.

This invention has-forits objectthe utilization of the exhaust of engines; and it consists in taking water from the working-boiler and cooling the same, and also taking live steam from the steam-space of the boiler, and, by means of the two operating in an injector, forcingthe exhaust directly into the water-space 0f the boiler from which it was taken.

The accompanying drawing shows an elevation with the cooling or refrigerating apparatus in section.

A designates the boiler, B the furnace, and G the engine. D is the (BOOllUg VQSSBl, and E the coolingwater cOil. F is the injector, and G the exhaust-pipe. H is the live-steam pipe to the engine, and J the live-steam pipe to the injector, and I the water-pipe leading to the injector from the water-coil, which leads from the boiler; and K, a pipe for inducinga current when necessary by blowing off and then suddenly closing the valve.

The operation is as follows: Steam being raised in the boiler, and the engine being started, water is let into the coil in the cooling-vessel and live steam to the injector, all the valves controlling these pipes beingopen ed as near simultaneously as possible. The injector now being in full operation, the exhaust is taken direct lrom the engine and forced into the \vater-spaceot' the boiler. The water used for cooling the boiler-water in the coil is heated, and may be used tor any useful purpose. After steam is raised only a small fire will be required to maintain the heatin the boiler and to keep up steam.

Having described my invention, what I claim as new, and desire to-secure by Letters Patent, is-

1. The process herein des -ribedfor the utilization of the exhaust of engines, consisting in taking water from the working-boiler and cooling the same, takinglive steam from the steamspace of the boiler, and, by means of the two operating in an injector, forcing the steam or the exhaust of the engine directly into the water-space of the boiler from which it was taken.

2. The combination of means for utilizing the exhaust ot'engines, consisting of the boiler, the cooling-coil, the exhaust-pipe, the livesteam pipe, and the injector, as set forth.

In testimony that[ c aim the foregoing as my own invention 1 nffix my signaturein presence of two witnesses.

' DAVID RENSHAW.

Witnesses:

B. F. MoRsELL, EUGENE D. UARUSL 

